Baryon asymmetry from electroweak tachyonic preheating
High Energy Physics - Phenomenology
2010-02-03 v1 Astrophysics
High Energy Physics - Lattice
Abstract
We consider a scenario in which the baryon asymmetry was created in the early universe during a cold electroweak transition. The spinodal instability of the Higgs field caused by a rapid change of sign of its effective mass-squared parameter induces tachyonic preheating. We study the development of Chern-Simons number in this transition by numerical lattice simulations of the SU(2)-Higgs model with an added effective CP-violating term. A net asymmetry is produced, and we study its dependence on the size of CP violation and the ratio of Higgs to W mass.
Keywords
Cite
@article{arxiv.hep-ph/0310342,
title = {Baryon asymmetry from electroweak tachyonic preheating},
author = {Anders Tranberg and Jan Smit},
journal= {arXiv preprint arXiv:hep-ph/0310342},
year = {2010}
}
Comments
30 pages, 9 figures